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Proceedings Paper

Three-dimensional shape measurement of specular surfaces by orthogonal composite fringe reflection
Author(s): Pei Xie; Minxue Tang; Xiaoru Wei
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Paper Abstract

This paper presents a novel method of 3D shape measurements of specular surfaces, based on fringe reflection technique and Fourier transform profilometry. A simple measurement system is set up. In this system, an LCD screen is used to display orthogonal composite fringe patterns. The fringe patterns reflected by a standard plane mirror and a measured specular surface are captured by a CCD camera. The phase distributions of the fringe patterns would be extracted by using Fourier transform profilometry. Relations between the surface gradients and phase changes in horizontal and vertical directions have been established. Then the shape of the measured surface can be reconstructed from gradient vector field by full-field least square method. The experiment of a concave mirror with a 100-mm diameter proves the validity of this method.

Paper Details

Date Published: 29 November 2011
PDF: 8 pages
Proc. SPIE 8200, 2011 International Conference on Optical Instruments and Technology: Optoelectronic Imaging and Processing Technology, 820014 (29 November 2011); doi: 10.1117/12.904805
Show Author Affiliations
Pei Xie, Soochow Univ. (China)
Minxue Tang, Soochow Univ. (China)
Xiaoru Wei, Soochow Univ. (China)


Published in SPIE Proceedings Vol. 8200:
2011 International Conference on Optical Instruments and Technology: Optoelectronic Imaging and Processing Technology
Toru Yoshizawa; Ping Wei; Jesse Zheng, Editor(s)

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